diff options
| -rw-r--r-- | drivers/parisc/led.c | 59 |
1 files changed, 29 insertions, 30 deletions
diff --git a/drivers/parisc/led.c b/drivers/parisc/led.c index 79caf1ca4a2..188bc8496a2 100644 --- a/drivers/parisc/led.c +++ b/drivers/parisc/led.c @@ -38,6 +38,7 @@ #include <linux/kernel_stat.h> #include <linux/reboot.h> #include <linux/proc_fs.h> +#include <linux/seq_file.h> #include <linux/ctype.h> #include <linux/blkdev.h> #include <linux/workqueue.h> @@ -147,41 +148,34 @@ device_initcall(start_task); static void (*led_func_ptr) (unsigned char) __read_mostly; #ifdef CONFIG_PROC_FS -static int led_proc_read(char *page, char **start, off_t off, int count, - int *eof, void *data) +static int led_proc_show(struct seq_file *m, void *v) { - char *out = page; - int len; - - switch ((long)data) + switch ((long)m->private) { case LED_NOLCD: - out += sprintf(out, "Heartbeat: %d\n", led_heartbeat); - out += sprintf(out, "Disk IO: %d\n", led_diskio); - out += sprintf(out, "LAN Rx/Tx: %d\n", led_lanrxtx); + seq_printf(m, "Heartbeat: %d\n", led_heartbeat); + seq_printf(m, "Disk IO: %d\n", led_diskio); + seq_printf(m, "LAN Rx/Tx: %d\n", led_lanrxtx); break; case LED_HASLCD: - out += sprintf(out, "%s\n", lcd_text); + seq_printf(m, "%s\n", lcd_text); break; default: - *eof = 1; return 0; } + return 0; +} - len = out - page - off; - if (len < count) { - *eof = 1; - if (len <= 0) return 0; - } else { - len = count; - } - *start = page + off; - return len; +static int led_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, led_proc_show, PDE(inode)->data); } -static int led_proc_write(struct file *file, const char *buf, - unsigned long count, void *data) + +static ssize_t led_proc_write(struct file *file, const char *buf, + size_t count, loff_t *pos) { + void *data = PDE(file->f_path.dentry->d_inode)->data; char *cur, lbuf[count + 1]; int d; @@ -234,6 +228,15 @@ parse_error: return -EINVAL; } +static const struct file_operations led_proc_fops = { + .owner = THIS_MODULE, + .open = led_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + .write = led_proc_write, +}; + static int __init led_create_procfs(void) { struct proc_dir_entry *proc_pdc_root = NULL; @@ -243,19 +246,15 @@ static int __init led_create_procfs(void) proc_pdc_root = proc_mkdir("pdc", 0); if (!proc_pdc_root) return -1; - ent = create_proc_entry("led", S_IFREG|S_IRUGO|S_IWUSR, proc_pdc_root); + ent = proc_create_data("led", S_IRUGO|S_IWUSR, proc_pdc_root, + &led_proc_fops, (void *)LED_NOLCD); /* LED */ if (!ent) return -1; - ent->data = (void *)LED_NOLCD; /* LED */ - ent->read_proc = led_proc_read; - ent->write_proc = led_proc_write; if (led_type == LED_HASLCD) { - ent = create_proc_entry("lcd", S_IFREG|S_IRUGO|S_IWUSR, proc_pdc_root); + ent = proc_create_data("lcd", S_IRUGO|S_IWUSR, proc_pdc_root, + &led_proc_fops, (void *)LED_HASLCD); /* LCD */ if (!ent) return -1; - ent->data = (void *)LED_HASLCD; /* LCD */ - ent->read_proc = led_proc_read; - ent->write_proc = led_proc_write; } return 0; |